Circular sawing machine



4 sheets-sheen 1. S. A. WOODS.

CIRCULAR SAWING MACHINE.

(No Model.)

(No Model.) 4 Sheets-Sheet 2.

S. A. WOODS.

CIRCULAR SAWING MACHINE.

A TTHNEY (No Model.) 4 Sheetsmsheet 3. S. A. WOODS. CIRCULAR SAWINGMAGHINRH Patented June '7, 1887.

, INVENTUI? A TTU/MEV (No Model.) 4 sheetssheet 4.

s. A. WOODS.

` GIRGULARSAWING MACHINE. No. 364,328.` E PatentedJu'ne 7, 1887.

N. PETERS. Piwlljkhognpber. Wlohhlloll. D. C.

top of the bench.

UNITED4 STATES` PATENT OFFICE.

SOLOMON A. VOODS, OF BOSTON, MASSACHUSETTS.

CIRCULAR SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 364,328, dated June 7,1887.

Application filed Januar 4,1886. Serial No. 187,598.

.To all whom it may concern.'

Be it known that I, SOLOMON A.WOODs, of Boston, in the county of Suffolkand State of Massachusetts, have invented a certain new and usefulImprovement in Circular Sawing Machines, of which the following is aspecification.

My invention reiates to circular sawing ma' ehines; and it consists incertain improvements in the construction and arrangement of the severalparts of the same, substantially as hereinafter described and claimed.

In the drawings, Figure l is a side elevation of a saw-bench providedwith my iniprovements. Fig. 2 is a top plan view of the same. Fig. 3 isan enlarged view of Fig. 2, showing the details of the working parts.Fig. 4 is an enlarged face view of a portion of the frame and mechanismfrom the opposite side shown in Fig. l. Fig. 5 is a side view of Fig. 4,partly in section, to show the connection of some of the working parts.Fig. 6 is a detail view of a portion of Fig. 5, having a differentadjustment of the parts. Fig. 7 is the saine asFig. 6, with the partsswung into another adjustment. Fig. Sis a reduced view of the same partsas shown in Fig. 6,with the other parts belonging thereto shown inconnection with the same. Fig. 9 is a view of a portion of Fig. 2, withthe parts shown as adjusted differently.`

A is the frame ofthe saw-bench. 'I is the S is the circular saw, mountedupon a shaft in bearings in the frame in the usual manner, and driven bya belt from pulley P on shaft p.

On one side ofthe frame, and near one corner of it, are attached twobrackets, a a', projecting outward, in which is journaled the uprightshaft s in such manner as to be 'capable of sliding longitudinally aswell as revolving therein. The part of shaft s which passes through theupper bearing, a, is of larger diameter than the pa rt passing throughthe lower bearing, a', there being a square shoulder between these twoparts near the middle of the shaft. Just beneath this shoulder, andfitting the smaller part of the'shaft, so as to allow the latter to turntherein, is applied the box a2. This box on one side carries the ear (Nomodel.)

a, and on the other the journal-bearing s? of the horizontal shafts',which is made in the form of a long sleeve. The shaft s has attached toone cud the pulleyp', and on the other the-speed or cone pulley p, andthe sleeve-bearing s2 abuts at each end against these pulleys, whichprevents endwise movenient of the shaft in theV bearing. ear a is made avertical hole with a screwthread, and fitted to 'this is the screw a",depending from a part of the bracket c, towhich it is attached by avertical journal-bearing,

and a collar, c, on its upper end, above the latter. The screw a4,therefore, supports box a, shaft Laand shaft s', with the pulleysattached to the latter, and raises or lowers all of them together. Anarm, aj", projecting Throughl from the bracket a, supports thehorizontal sleeve-bearing a, carrying the shaft s, which has on itsouter end the hand-wheel Wand on its inner end the bevel-gear c',meshing into bevel-gear c2, attached to screw at By turning thehand-wheel, therefore, box is raised and lowered.

An arm, al, extends around from the rear of the frame outside the pathof the shaft s in rising and falling, and supports on its outer endA`the collar c, which fits the shaft closely, and

serves to limit the path of the box a2 in its downward movement. Collarc3 is' also provided with a setserew in one side, by means of which theshafts lnay be prevented from turning around when the screw is set up.

The pulley p2 belts onto a pulley, p3, on shaft p, as shown, the slightalteration in the tension of the belt by the' raising and lowering ofthe former not being material. Shaft s has fixed on its upper end acollar, s3, provided with ears s* s, projecting upward on each side, andholes through said ears in a direction horizontal and tangential toshaft s, as. shown. On the upper end of collar s3 is attached a head, E,carrying the arm E. This attachment is effected by having ears e on thelower end of the head, which fit between the ears s4, and are providedwith holes registering with the holes in thelatter. Bolts 85, Figs. 5and 7 ,are passed through the ears s4 c, securing them to gether. Byremoving one of these bolts on one side of collar s3 the one on theopposite 1ro Aor both bolts can be removed and head E be taken off ofshaft s and replaced very readily.

In order to hold the head Ein theinclined position shown in Fig. 6, itslower snrface,which comes over the longitudinal center of shaft s, isprovided with a downwardly-proj ecting ear, e', which has pivoted on itslower end the sliding bolt e?, which moves up and down in an axial holeformed in shafts downward from its upper end, and a set-screw th roughthe side of theshaft and collar s3 enters this hole transversely,andbeing screwed up against sliding bolt e2, secures it in any desiredposition, and the head E attached thereto.

Head E carries the pulley p, mounted on the horizontal shaft or stud p5,in line with pulley p', from which it is belted when head E is in placeupon collar s3. A pinion, es, is attached to pulley p4 and turns onshaft p5. On the head E is attached another horizontal stud, p, on whichrevolves the gear-wheel e", to which is attached the pinion er',revolving with it. These pinions are covered by ahousing covering them,so that the workman cannot be injured by them. rIhe arm E has upon ittwo short arms, es e, Figs. 2, 3, and 8, to which are pivoted the arms ee at one end, the latter carrying the long sleeve e8, attached to theiropposite ends. Mounted axially in this sleeve is the revolving shaft p',parallel with arm E. This shaft carries on one end the gear-wheel e9,engaging with pinion ef", and on the other the toothed feed-wheel F inline with the saw S, which engages with the surface of the board andfeeds it along over the table.

The gear-wheel e of the shaft of the feedwheel F is driven by the powercommunicated through the pinion e with the latter placed on the frontside of the former-that is, on the side of the shaft p7 of thefeed-wheel from which the board is fed in under it, commonly called thefeed-in77 side. The effect of this arrangement when the feed-wheel isbeing driven is that the direction of rotation of the pinion e5necessarily draws downward upon the gear-wheel e and its shaft and thefeed- WheelF, and presses the latter upon the surface of the board beingfed through the machine. I am therefore enabled to dispense withweighted arms or levers attached to sleeve e8 to press the feed-wheelupon the board. Furthermore, when a larger and heavier board is fedthrough under the feed-wheel F, requiring more power to be transmittedthrough the pinion-wheel e5, to drive the board through, thispinion-wheel presses down harder upon its gear-wheel e and thusautomatically increases the pressure upon feed-wheel F in proportion tothe greater amount of work it is required to do. This feature of theconstruction is especially valuable where light and heavy boards areindiscriminately fed through the machine, because 'it regulates thebearing and friction of the feed-wheel F upon the board so as to nothave too much friction and consequent loss of power with light boards onthe one hand, or too little pressure of thefeedwheel and failure ofdriving-power with heavy boards'on the other.

lt will be observed that the arms e7 e7 are braced apart at theirpivoted ends by the rod el", and that their pivots are so'arranged as toallow' the gear-wheel c to remain engaged with pinion c as the arms andattached sleeve esturn to rise and fall on the pivots, thus allowing thefeed-wheel F to move up and down to accommodate itself to differentthicknesses of lumber while feeding* them through the machine withoutdisturbing the operation of its driving mechanism. To one of the arms c7a handwheel and screw, q, is attached by the screw passing downwardthrough a screwthreaded hole in the arm just above arm E. By turninghand-wheel q the sleeve e8 may be adj usted at different heights fromthe sawtable.

The arm E carries at its outer end the curved arm as, which is archedover sleeve eg, so as not to interfere with the rise and fall of thefeed-wheel, and supports on its outer end the curved shield a,protecting tliesaw.

A post, O, Fig. 8, rises at one corner of the saw-table, and to its topis attached, by a universal pivot j oint, the rod o. This :rod has itsouter end screw-threaded and check or clamp nuts o o' fitted thereto. Ontop of arm E is fixed a stud, o2, having a slot or groove cut in it fromits top edge downward a sufficient distance to allow the rod o to bc`dropped therein. W'hen this is done, the nuts o o' are screwed up andthe arm E is securely braced.

lf it be desired to use the saw-bench without the feed attachment, itcan either be swung into the position shown in Fig. 9 or tilted up,

as shown in Fig. 8; or if it be desired to cut off the ends of longboards, the head E can be disconnected from shaft s and removed with allthe attached parts of the feed mechanism above thet-able. This adaptsthe saw-bench feed to be used in corners ofthe room or againstpartitions or near other machines, and removed out of the way atpleasure by some one of these adjustments under almost any conceivablecircumstances.

The saw-table is raised and lowered at one end by a crank and screwplaced underneath it in the usual manner.

N is a gage or guide having a straightedge next the saw, and movingtoward or away from it in the groove n in the table-top. A lever, n', ispivoted upon a vertical pin to the table-top at one end, and at theother has the handle n2 projecting beyond the top. Opposite to the guideN a short link, a, is pivoted at one end to lever a and at the other endto the top of the guide. By moving the lever horizontally the guide willbe adjusted to and roo fro in groove a. To secure it in place, astationary rack, n, is attached to the saw-table, and the lever n isprovided with a downwardly-projecting metal edge, nf, fitted to enterthe teeth of the rack. By lifting thelever slightly it is disengagedfrom the rack and moved along to the desired place, when by dropping itit re-engages with the rack and holds the 4gage a in position. Byaccurately laying off the rack-teeth and providing them with indicatingnumbers the gage may be adj listed at a predetermined distance from thesaw without measuring to determine it when it is being adjusted.

By pivotingrthe lever n at one end to the table and having its handle atthe other end and attaching the guide N to its central part I am enabledto remove its pivot-fastening to the farther edge of the table, awayfrom beneath arm E and its attachments, and get a longer leverage thanif the pivot were between the handle and the place where the gage wasattached.

It is evident that other welhknown forms of detachable fastenings thanthose shown may be employed to secure the head E to the shaft s belowthe surface of the tabletop, if preferred, without departing from thespirit of my invention. ltisalso evident that a single pivoted arm, ci,may be employed to carry the bearing-sleeve es of the feed-wheel Finstead of two, if desired. y

Vhat l claim as new and of my invention 1sl. The combination of thetableT, the feedwheel F, the arm E', projecting horizontally over the tableand carrying the shaft of said feed-wheel, the vertical shaft s,carrying the arm and adapted to rise and fall vertically and be revolvedin Vits bearings, and mechanism adapted to elevate and lower said shaft,substantially as described.

2. The combination of the table T, the feedwheel F, the arln E',projecting horizontally over the table and carrying the shaft of saidfeed-whecl, the vertical shaft s, carrying the arm, and adapted to riseand fall vertically and be revolved in its bearings, the sleeve a3, andthe screw a", j ournaled in the table-frame substantially as described.I

3. The combination of the table T, the feedwheel F, and the armE,projeeti ng horizontally over the table, carrying the shaft of saidfeedwhecl, and pivoted upon a hinge, e st, at its head part E, with theaxis of the hinge horiY zontal and parallel to the face of saidfeedwheel, whereby the said arm and wheel are adapted to be swung upwardon the hinge in a plane transverse to that of said wheel, substantiallyas described.

4. The combination of table T, the feedwheel F, and the arm E', projecting horizontally over the table and carrying the bearings of saidfced-whcel, and having the head part E extending below the table surfaceand secured at its lower end to its support by a joint and detachablefastenings, substantially as described.

5. The combination of thc table T, the head E, and arm E, projectinghorizontally over the table and mounted upon pivots upon thelatter,adapted to allow said arm to swing both horizontally andvertically thereon, the arm or arms el, pivoted to said arm E', andcarrying the sleeve-bearing e8, the feed-wheel F, mounted upon a shaftsupported in said sleevebearing, and the train of gearing adapted todrive said shaft and mounted upon and supported by said head E and-armE', substantially as described.

G. The combination of the table T, the head E, and arm E', projectinghorizontally over the table, mounted uponpivots upon the latter, adaptedto allow said arm to swing both horizontally and vertically thereon, andcarrying the train of gear-pinions c c5, with 1neehanisrn for drivingthe latter, the arm or arms el, pivoted to arm E and carrying thesleevebearing c, the shaft p?, journaled in said sleeve bearing andcarrying the gear c, and the feed wheel F, mounted upon said shaft,substantially as described.

7. The combination, with the sawtable T and its frame, of the shafts,head E, and horizontal arm E', adjustable vertically together, the shafts and its pulleys p p2, mounted in sleeve a and adjustable with shafts,the pulley p, mounted on head E, the feed-wheel F and its shaft p7,mounted upon arm E', and gear mechanism, substantially as sct forth,connect ing pulley p with shaft pl, whereby all the parts are adjustablevertically together, as set forth, while shaft p7 is being driven frompulley p, substantially as described.

8. The combination of the table T, the horizontal arm E', and its headE, secured by detachable fastenings in ears s @,below the tabletop, thepulley p and feed-wheel shaft p7, con neeted by gear mechanism,substantially as set forth, and mounted upon said arm and head abovesaid fastcnings, and the pulley p, mounted on shaft s', below saidfastenings in position to drive pulley p* by a belt, subst-antially asdescribed.

9. The combination of the table T, the saw S, the gage or guide N,adapted to bear against one side of the lumber passing the saw, the headE, and arm E', projectinghorizontally over the table and mounted upon apivot upon the latter, adapted to allow said arm to swing horizontallythereon, the arm or arms. el, pivoted to said arm E and carrying thesleevebearing e, the feedwlieel F, mounted upon a shaft supported insaid sleeve-bearing and adapted to be swung with arm E', to give greateror less bearing of the lumber fed by it against gage N, and the train ofgearing adapted to drive said i'cedwheel shaft, and mounted upon andsupported by said head, substantially as described. i

l0. The combination of the table T, the saw IOO IIO

S, the head and arm E E, projecting horizontally over the table, the armor arms e7, pivtrain of gearing adapted to drive said pinion oted tosaid arm E and Carrying the sleeveL c5, and mounted upon and supportedby said bearing e, the shzifbp", jou rnaled in said sieevehead,substantially as described. bearing and carrying' upon ib the feed-WheelSOLOMON A. WOODS.

5 F'and gear-Wheel e, the pinion e5, engaging Witnesses:

with pinion c, and mounted upon the front 01 DAVID HALL RICE, feed-inside ofthe shaft of the latter, and the N. P. OoKINGToN.

